Am I a good singer? please answer?

Im 14 and auditioning for a musical which one should i sing?
castle on a cloud

http://tinypic.com/r/219ubeq/7

somewhere over the rainbow

http://tinypic.com/r/oa9lrm/7

tomorrow

http://tinypic.com/r/2lu8495/7

tell me which one i should audition with :p (the musical is "A Little
Princess" if that helps/matters :)

THANKS :3